ID 974 DCC electronic controllers for forced air refrigeration units
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1 cod. 9IS42075 rel. 4/06 -GB- *If the conditions for defrosting are not present, or if parameter OdO<>0, the display will blink three times, to indicate that the operation will not be performed. ID 974 DCC electronic controllers for forced air refrigeration units with deep cooling cycle Eliwell Electronic controller for forced air refrigeration units: the ID974 DCC is also suitable for mixed refrigeration systems that perform a blast chilling cycle and subsequent storage of foodstuffs. At the end of the blast chilling cycle the controller automatically switches to storage mode. 2 NTC/PTC probes 3 relays TTL serial 230V SETTING THE SET POINT - MACHINE STATUS MENU a) Press the button and release it to access the machine status menu. In normal conditions, the labels for the Set point value is found in the menu. Once the SEt label has been displayed, press the button to display the Setpoint value. The Setpoint value appears on the display. UP Scrolls through the menu items Increases the values Activates manual defrost function DOWN Scrolls through the menu items Decreases the values fnc (press once) fnc ESC function (quit) (hold down) Enable manually DCC function (par. H33) (press once) Accesses the point Displays the alarms (if active) Displays Pb1 and Pb2 (see) (hold down) Accesses the parameter programming menus To change the Set point value, use the UP and DOWN buttons within 15 seconds. If you press the button again, when the fnc button is pressed or 15 seconds elapse, the last value displayed will be stored and the SEt label will reappear on the display. b) If alarms are present, the AL label appears. By using the UP and DOWN buttons, you can scroll through all the folders in the menu: BUTTONS AND LEDS Deep Cooling Cycle (Blast Chiller) Function (DCC) The instrument automatically inhibits defrosting and manages alarms during the blast chilling function. The blast chilling cycle can be activated by pressing the fnc key Compressor ON when the compressor is started up; blinking in case of delay, protection or blocked enabling Defrost ON when defrosting; blinking in case of manual enabling -AL: alarm folder (if alarms present, except for faulty probes/probe errors; -SEt: Set point ting folder see pt. a) -Pb1: probe 1 value folder; -Pb2: probe 2 value folder - if present - c) If an alarm condition exists when the Machine Status menu is accessed, the AL folder label appears. Alarm ON when the alarm is enabled; blinking when the alarm is silenced Fans ON when the fan is working (example: when maximum and minimum temperature alarms are present) Use the UP and DOWN buttons to scroll through the list of active alarms and press to display the selected alarm. The menu is divided into 2 levels once users have pressed the button for 5 seconds, they can access the user level folders (1) Navigation at user level(1): By using the UP / DOWN buttons you can scroll through all the folders in the programming menu that only contain user level parameters (1) How to access the installer level (2): By using the UP / DOWN buttons, scroll through the user level folders (1) until the folder with the CnF label is displayed. Then press to access the parameters contained in it. By using the UP / DOWN all the parameters in the user level (1) in CnF are displayed, continue until the PA2 label is not longer displayed and press. By pressing the button next to PA2 the first folder containing installer level parameters will be displayed and then the CP folder. PROGRAMMING MENU Navigation at installer level(2): By using the UP / DOWN buttons you can scroll through all the folders in the programming menu that only contain installer level parameters (2) How to modify the parameter value (on both levels): When the button is pressed, the first folder in the menu is displayed. (e.g.: CP folder) By using the UP / DOWN buttons you can scroll through all the folders in current level. By pressing the button next to the selected folder (in this case AL ) the first parameter in the current level will be displayed. Select the desired parameter using the UP / DOWN keys. By pressing the button the value of the selected parameter is displayed and by using the UP and DOWN buttons, it can be modified.
2 Access to parameter handling both at user level and installer level can be limited by using passwords. The passwords can be enabled by ting the PA1 (user password) and PA2 (installer password) in the dis folder. The passwords are enabled if the value of the 2 parameters PA1 and PA2 is not 0. To access the Programming menu hold down the button for more than 5 seconds. If specified, the user level(1) access PASS- the CnF folder is displayed. Press the button to enter the CnF folder where the PA2 label is present. Scroll through the folder parameters and press the button next to the PA2 label, 0 will appear on the display. PASSWORD WORD will be requested If password 1 is enabled (not 0) you will be asked to enter it. Perform the operation by selected the correct value using the UP e DOWN keys and press the button to confirm. Installer level (2) parameters In the programming menu scroll through the folders containing the user level parameters using the UP and DOWN buttons until Use the UP / DOWN buttons to select the correct value of the installer password and then press the button to access the installer level parameters (2). If the password is not entered correctly, the device will display the PA2 label again and the operation will have to be repeated. The Copy Card is an accessory connected to the TTL serial port used for quick programming of the unit parameters (upload and download parameter map to one or more units of the same type). upload (UL label), download (dl label) and copy card formatting (Fr label) operations are performed in the following way: The FPr folder contains the commands necessary for use of the Copy Card. Press to access the functions. Use the UP / DOWN buttons to display the required function. Press the and uploading (or downloading) will be performed. If the operation is successful y will be displayed, if it is not successful, n will be displayed. COPY CARD Download from re Connect the copy card when the instrument is OFF. The programming parameters are downloaded when the device is switched on. At the end of the lamp test, the following messages are displayed for about 5 seconds: dly label if copy operation is successful DLn label if operation fails DOWNLOAD UPLOAD NOTE: after the parameters have been downloaded, the device uses the downloaded parameter map tings. see FPr folder in Parameter Table and Description of parameters At each level in both menus, when the fnc button is pressed or the 15 second time out elapses, you are taken back to the higher display level and the last value on the display is stored. MAX-MIN ALARMS Temperature expressed as an absolute value (par Att =0) Abs(olute) 1 Temperature in relation to point (par Att =1) rel(ative) 2 Off Minimum temperature alarm Maximum temperature alarm Minimum temperature alarm back swing Maximum temperature alarm back swing LAL Temperature lower than or equal to LAL (LAL with sign) Temperature greater than or equal to HAL (HAL with sign) Temperature higher than or equal to LAL+ Temperature lower than or equal to HAL- HAL SP1+ LAL/SP2 + LAL SP1+ HAL/SP2 + HAL Temperature lower than or equal to point +LAL (LAL positive only) Temperature greater than or equal to point +HAL (HAL positive only) Temperature greater than or equal to point + LAL + point - LAL + Temperature lower than or equal to point+hal- if Att=reL(ative) LAL must be negative: therefore point+lal< point because point+(- LAL )=- LAL ID DCC 2/6
3 DEEP COOLING CYCLE (DCC) The Deep Cooling Cycle Function (DCC) is enabled by H01 parameter. When DCC is activated the compressor works on dcs point with dif differential: time is by tdc parameter (blast chiller cycle). defrost Stop temperature (par. dst) At DCC activation interval between two defrost is re, and defrost is disabled. After DCC cycle and after a time by dcc a defrost is forced - delay between defrosts is re-enabled (see dit). Temperature Alarms are disabled during DCC cycle - except for LAL if Att=1 (relative to point). After DCC cycle Alarms management is restored. In case of faulty probe and/or blackout DCC cycle stops. If dcs, tdc and dcc parameters are changed by the user during the DCC cycle this will be re-calculate with new parameters tings. DCC (par. DCS) compressor key DCC timeout (par. tdc) delay defrost after DCC par. dcc defrost timeout (par. det) defrost ALARMS LABEL E1 ALARM Probe 1(control) faulty CAUSE measuring of values outside the nominal reading range control probe faulty/shorted/open probe EFFECTS E1 label appears on display; Controller enabled as indicated by the On1 and OF1 parameters if programmed for the Duty Cycle Resolving problems check the probe wiring replace the probe NOTES E2 Probe 2 (evaprator) faulty measuring of values outside the nominal reading range control probe faulty/shorted/open probe E2 label appears on display; check the probe wiring replace the probe AH1 High temperature alarm value read by probe 1 > HAL after time equal to tao. (see MIN MAX ALARMS and description of HAL, Att and tao parameters) Alarms created in the AL folder with the AH1/AH2 label Wait for temperature value read by probe 1 to fall below HAL AL1 Low temperature alarm value read by probe 1 < LAL after time equal to tao. (see MIN MAX ALARMS and description of LAL, Att and tao parameters) Alarms created in the AL folder with the AL1/AL2 label Wait for temperature value read by probe 1 to go above LAL Ad2 End of defrost due to time-out If defrost ends because of a timeout (instead of being caused by a defrost end temperature detected by the defrosting probe), an alarm is generated an the icon is turned on consequently. Alarms created in the AL folder with the Ad2 label ALL see Alarm LED Automatic back swing occurs when the next defrost starts By pressing any key during the alarm condition, the signal light disappears. In order to really erase the alarm you must wait the next defrost. ALL Manual silencing by pressing button ALL If there are alarm exclusion times (see parameter table AL folder) the alarm will not be signalled. ID DCC 3/6
4 The instrument includes a facility for disabling the keyboard: using the keys (pressing UP+DOWN simultaneously for 2 seconds; see KEYS AND LEDS) by programming the Loc parameter (see folder with dis label). KEYBOARD LOCKING PARAMETERS TABLE If the keyboard is locked, you can access the Programming Menu by pressing the key. The Setpoint can also be viewed. PAR. RANGE ELIWELL U.M. LEVEL DEFAULT/ PAR. RANGE ELIWELL U.M. LEVEL DEFAULT/ SETPOINT SEt LSE...HSE -22 C/ F 1 CP FOLDER dif C/ F 1 HSE LSE C/ F 2 LSE HSE C/ F 2 * dcs C/ F 2 * tdc min*10 2 * dcc min 2 Ont min 2 OFt min 2 don sec 2 dof sec 2 dbi sec 2 OdO sec 2 DEF Folder dty 0/1/2 0 num 2 dit h 1 dct 0/1/2 1 num 2 doh min 2 det min 1 dst C/ F 1 dpo n/y 0 C/ F 2 FAn Folder FSt C/ F 1 FAd C/ F 2 Fdt min 2 dt min 2 dfd n/y y flag 2 FCO n/y/dc y num 2 * DCC parameters AL Folder Att 0/1 1 flag C/ F 2 HAL LAL C/ F 2 LAL HAL C/ F 2 PAO h 2 dao min 2 tao min 2 dis Folder LOC n/y n flag 2 PA num 2 PA num 2 ndt n/y y flag 2 CA C/ F 2 CA C/ F 2 ddl 0/1/2 1 num 2 dro 0/1 0 flag 2 CnF Folder ** H00 0/1 1 flag 2 * H01 n/y y flag 2 H num 2 H42 n/y y flag 2 rel / / / / tab / / / / Fpr Folder UL / / / / dl / / / / Fr / / / / **Check the NTC/PTC default probe type installed (see label) LEVEL column: indicates the visibility level of parameters accessed using a PASSWORD (see relevant paragraph). If one or more parameters are modified, it is suggested to the switch off the controller after the modification and then switched back on. MECHANICAL ASSEMBLY The unit has been designed for panel-mounting: Drill a 29x71 mm hole, insert a tool and fix it in place with the brackets provided. Do not assemble the instrument in excessively humid or dirty locations since it is designed to be used in locations with normal pollution levels. Always make sure that the area next to the cooling openings of the tool is adequately ventilated. ELECTRICAL CONNECTIONS Warning! Always switch off machine before working on electrical connections. The instrument has screw terminals for connecting electrical cables with a maximum diameter of 2.5 mm 2 (only one conductor per terminal for power connections): for terminal capacity, see instrument label.the relay contacts are voltage-free. Do not exceed the maximum current allowed. For higher loads, use a suitable contactor. Make sure that the power voltage complies with the device voltage. The sensor has no connection polarity and can be extended using an ordinary bipolar cable (note that extending the probe may affect the electromagnetic compatibility (EMC) of the instrument: special care must be used when wiring). Probe cables, power supply cables and the TTL serial cable should be kept separate from power cables. ID DCC 4/6
5 DESCRIPTION OF PARAMETERS dif HSE LSE *dcs *tdc *dcc COMPRESSOR CONTROL (folders with label CP ) Compressor relay activation differential: the compressor stops on reaching the Setpoint value (as indicated by the adjustment probe) and restarts at a temperature value equal to the Setpoint plus the value of the differential. Note: the value 0 cannot be assumed. Maximum possible point value. Minimum possible point value. NOTE: The two s are interdependent: HSE (maximum ) cannot be less than LSE (minimum ) and vice versa Deep Cooling Setpoint Time Out Deep Cooling Cycle Delay Defrost after Deep Cooling Cycle *see DCC description and diagram page 3 Ont Compressor activation time in the event of a faulty probe. If to 1 with Oft to 0, the compressor is always on, while with OFt >0 it operates in duty cycle mode. OFt Compressor off time in the event of a faulty probe. If to 1 with Ont at 0, the compressor is always off, while with Ont>0 it operates in duty cycle mode. don Starting delay. The parameter indicates that a protection is active on the relay actuations of the generic compressor. Between the request and effective activation of the compressor relay, at least the specified time must elapse. dof Delay after switching off. The parameter indicates that the protection is active on compressor relay actuations. At least the indicated time must elapse between switch-off of the compressor relay and the successive switch-on. dbi Delay between switch-ons. The indicated time must elapse between two subsequent switch-ons of the compressor. OdO Delay time in activating the outputs after switch-on of the instrument or after a power failure. 0= not active. DEFROSTING CONTROL (folders with labels def ) dty dit dct doh dst det dpo FSt FAd Fdt dt dfd FCO DEFROSTING CONDITIONS The instrument allows defrosting to be performed in the following conditions: the evaporator temperature is lower than the defrost end temperature by the dst parameter; manual defrosting is not already activated (see); in this case the request for automatic defrosting will be cancelled. Automatic defrosting In this case, defrosting takes place at time intervals by parameter dit (=0 defrosting will not take place at all). As mentioned above, if the parameter dit> 0 and defrosting conditions apply (see parameter dst), defrosting will take place at fixed intervals and according to the parameter dct Type of defrost. 0 = electrical defrosting; 1 = cycle inversion defrosting (hot gas); 2 = Free mode defrost (independent of compressor). Interval between the start of two subsequent defrosting operations. 0= the function is disabled (defrosting is NEVER performed) Selection of count mode for the defrosting interval. 0 = compressor hours of operation (DIGIFROST method); Defrosting active ONLY with the compressor on. NOTE: compressor time of operation is counted regardless of the evaporator probe (counting is active if evaporator probe is absent or faulty). 1 = hours of appliance operation. Defrost counting is always active when the machine is on and starts at each power-on. 2 = compressor stop. Every time the compressor stops, a defrosting cycle is performed according to parameter dty Defrost start delay time from start up of instrument. Defrosting end temperature (determined by the evaporator probe). Defrost time-out: determines the maximum duration of defrosting. Determines whether the instrument must enter defrosting at start-up (if the temperature measured by the evaporator allows this operation). y = yes, starts defrosting at start-up; n = no, does not start defrosting at start-up. FAN CONTROL (folder with FAn label) Fan lock temperature: if the evaporator probe reads a higher value than the value, the fans are stopped. The value is positive or negative and, depending on parameter FPt, can represent the temperature as an absolute value or relative to the Setpoint. Fan activation intervention differential (see par. FSt ). Delay time at fan activation after a defrosting cycle. Dripping time. Allows exclusion of the evaporator fans to be selected or not selected during defrosting. y = yes (fans excluded); n = no. It allows the fan lock to be selected or not when the compressor is OFF. y = fans active (with thermostat; depending on the value read by the defrosting probe, see FSt parameter); n = fans off; dc = duty cycle. FOd Att AFt HAL LAL PAO dao tao Allows fan lock to be selected when the door is open and fan restart when the door is shut (if they were active). n=fan lock; y=fans unchanged ALARMS (folder with AL label) Parameter HAL and LAL modes, as temperature absolute value or as differential relative to the Setpoint. 0 = absolute value; 1 = relative value. Alarm differential. Maximum temperature alarm. Temperature value (understood as distance from the Setpoint or as an absolute value based on Att) which if exceeded in an upward direction triggers the activation of the alarm signal. See Max/Min. Alarm Diagram. Minimum temperature alarm. Temperature value (understood as distance from the Setpoint or as an absolute value based on Att) which if exceeded in a downward direction triggers the activation of the alarm signal. See Max/Min. Alarm Diagram. Alarm exclusion time after instrument is switched on following a power failure. Alarm exclusion time after defrost. Temperature alarm signal delay time. DISPLAY (folder with dis label) LOC Keyboard locking. It is still possible to enter parameter programming and modify the parameters, including the status of this parameter, in order to allow keyboard unlocking. y = yes (keyboard locked); n = no. PA1 When enabled (value other than 0), it constitutes the access key for level 1 parameters. ndt View with decimal point. y = yes (view with decimal point); n = no (only integers). CA1/CA2 Calibration 1/2. Positive or negative temperature value added to the value read by probe 1/2 ddl Viewing mode during defrosting. 0 = shows the temperature read by the thermostat probe; 1 = locks the reading at the temperature value read by thermostat probe when defrosting starts and until the next time the Setpoint value is reached; 2 = displays the label def during defrosting and until the next time the Setpoint value is reached. dro Select C or F for displaying the temperature read by the probe. 0 = C, 1 = F. PLEASE NOTE: switching between C and F or vice versa DOES NOT modify the point, differential, etc. (for example =10 C become 10 F). H00 H01 H33 H42 rel tab UL dl Fr CONFIGURATION (folder with CnF label) Selection of probe type. 0 = PTC; 1 = NTC. Enable Deep Cooling Cycle Function (y= yes, n= no) Configurability FNC key (ESC function) 0 = disabled; 1 = defrost; 2 = auxiliary; 3 = reduced (economy); 4 = DCC function Evaporator probe presence. n= not present; y= present. Device version: read only parameter. Reserved: read-only parameter. COPY CARD (folder with label Fpr ) - (see Copy Card section) Upload. Programming parameter transfer from instrument to Copy Card. Download. Programming parameter transfer from Copy Card to instrument. Format. Erasing all parameters in the key. PLEASE NOTE: using the Fr parameter (key formatting) results in permanent loss of data inserted in key. The operation cannot be cancelled. CONDITIONS OF USE PERMITTED USE For safety reasons the instrument must be installed and used in accordance with the instructions supplied. Users must not be able to access parts with dangerous voltage levels under normal operating conditions. The device must be suitably protected from water and dust according to the specific application and only be accessible using special tools (except for the front keypad). The device can be fitted to equipment for household use and/or similar use in the refrigeration sector and has been tested with regard to safety in accordance with the European harmonized reference standards: It is classified as follows: as an automatic electronic control device to be integrated as regards its construction; as a 1 B type operated control device as regards its automatic operating features; as a Class A device in relation to the category and structure of the software. UNPERMITTED USE The use of the unit for applications other than those described above is forbidden. It should be noted that the relay contacts supplied with the device are functional and therefore exposed to potential faults. Any protection devices required to comply with product requirements or dictated by common sense due to obvious safety reasons should be installed externally. ID DCC 5/6
6 TECHNICAL DATA ID DCC WIRING DIAGRAM Front protection Casing Dimensions Assembly Operating temperature Storage temperature Ambient operating and storage humidity Display range Analogue input Serial Digital outputs (configurable) Buzzer Measurement range Accuracy Resolution Power consumption Power supply IP65 PC+ABS UL94 V-0 resin plastic body, polycarbonate front, thermoplastic resin buttons. front panel 74x32 mm, depth 59 mm (terminals excluded). on panel, with drilling template 71x29 mm (+0.2/-0.1 mm) C C % RH (non-condensing). NTC probe: C ( F); PTC probe: C ( F) on display 3 1/2 digits + sign. 2 PTC or NTC input (parameter selectable). TTL for connection to Copy Card 3 outputs on relays: (A) 1 output on SPDT relay 8(3)A 1/2 hp 250Va, (B) 1 output on SPST relay 8(3)A 1/2 hp 250Va, (C) 1 output on SPST relay 5(2)A 1/4 hp 250Va (for relay capacity, see instrument label). if present from -55 a 140 C. better than 0.5% of bottom scale + 1 digit. 0.1 C (0.1 F up to F; 1 F above). 3 VA max 230Va ±10% 50/60 Hz PLEASE NOTE: please refer to label on the instrument for relay capacity, power supply and terminals layout. TERMINALS 1 Common relay contact 2 N.O. defrost relay (A) 3 N.C. defrost relay (A) 4 Compressor relay output (B) 5 Fan relay output (C) 6-7 Power supply 8-9 Probe 2 input (evaporator) 8-10 Probe 1 input (thermostat) A TTL input for Copy Card ID V (A) (B) (C) Supply A Pb2 10 Pb1 The technical characteristics in this document concerning measurements (range, accuracy, resolution, etc.) refer to the instrument in the strictest sense and not to any accessories provided such as probes, for example. This means, for example, that an error introduced by the probe is added to any error that is typical of the instrument. RESPONSIBILITY AND RESIDUAL RISKS Eliwell shall not be liable for any damages deriving from: - installation/use other than that prescribed and, in particular, which does not comply with the safety standards specified in the regulations and/or those given herein; - use on boards which do not guarantee proper protection against electric shock, water or dust when assembled; - use on boards which allow dangerous parts to be accessed without the use of tools; - tampering with and/or alteration of the product; - installation/use on boards that do not comply with the standards and regulations in force. DISCLAIMER 4/2006 -GBcod. 9IS42075 This document is exclusive property of Eliwell and cannot be reproduced and circulated unless expressly authorized by Eliwell. Although Eliwell has taken all possible measures to guarantee the accuracy of this document, it declines any responsibility for any damage arising out of its use. The same applies to any person or company involved in preparing and writing this document. Eliwell reserves the right to make any changes or improvements without prior notice and at any time. ID DCC 6/6
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